In this task you will be given a passage and a yes/no question based on the passage. You should answer the question using the information from the passage.

Input: Consider Input: passage: In mathematics, a polynomial is an expression consisting of variables (also called indeterminates) and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables. An example of a polynomial of a single indeterminate x is x − 4x + 7. An example in three variables is x + 2xyz − yz + 1.
 question: does a polynomial have to have a variable?

Output: Yes


Input: Consider Input: passage: St James's Palace is still a working palace, and the Royal Court is still formally based there, despite the monarch residing elsewhere. It is also the London residence of the Princess Royal, Princess Beatrice of York, and Princess Alexandra. The palace is used to host official receptions, such as those of visiting heads of state, and charities of which members of the royal family are patrons. The Palace forms part of a sprawling complex of buildings housing Court offices and officials' apartments. The immediate palace complex includes York House, the former home of the Prince of Wales and his sons, Princes William and Harry. Lancaster House, located next-door, is used by HM Government for official receptions, and the nearby Clarence House, the former home of the Queen Mother, is now the residence of the Prince of Wales. The palace also served as the official residence for Princess Eugenie of York until April 2018.
 question: does the queen stay at st james palace?

Output: No


Input: Consider Input: passage: Thread sealants such as joint compound (pipe dope or thread seal tape such as PTFE tape) are unnecessary on compression fitting threads, as it is not the thread that seals the joint but rather the compression of the ferrule between the nut and pipe. However, a small amount of plumber's grease or light oil applied to the threads will provide lubrication to help ensure a smooth, consistent tightening of the compression nut.
 question: do i use plumbers tape on compression fittings?


Output: No


